DOI: 10.1063/1.123476. Schottky barrier heights of tantalum oxide, barium strontium titanate, lead titanate, and strontium bismuth tantalate

Schottky barrier heights of tantalum oxide, barium strontium titanate, lead titanate, and strontium bismuth tantalate

10.1063/1.123476

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

The Schottky barrier heights of various metals on the high permitivity oxides tantalum pentoxide, barium strontium titanate, lead zirconate titanate, and strontium bismuth tantalate have been calculated as a function of the metal work function. It is found that these oxides have a dimensionless Schottky barrier pinning factor S of 0.28–0.4 and not close to 1 because S is controlled by Ti–O-type bonds not Sr–O-type bonds, as assumed in earlier work. The band offsets on silicon are asymmetric with a much smaller offset at the conduction band, so that Ta2O5 and barium strontium titanate are relatively poor barriers to electrons on Si.

Bibliography

Robertson, J., & Chen, C. W. (1999). Schottky barrier heights of tantalum oxide, barium strontium titanate, lead titanate, and strontium bismuth tantalate. Applied Physics Letters, 74(8), 1168â1170.

Authors 2

J. Robertson (first)
C. W. Chen (additional)

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Dates

Type	When
Created	23 years ago (July 26, 2002, 9:36 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 10:45 a.m.)
Indexed	4 weeks ago (July 27, 2025, 3:53 a.m.)
Issued	26 years, 6 months ago (Feb. 22, 1999)
Published	26 years, 6 months ago (Feb. 22, 1999)
Published Print	26 years, 6 months ago (Feb. 22, 1999)

Funders 0

None

BibTeX

@article{Robertson_1999, title={Schottky barrier heights of tantalum oxide, barium strontium titanate, lead titanate, and strontium bismuth tantalate}, volume={74}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.123476}, DOI={10.1063/1.123476}, number={8}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Robertson, J. and Chen, C. W.}, year={1999}, month=feb, pages={1168–1170} }

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